What is powder metallurgy? List the steps involved in it. Mention advantages & applications of powder metallurgy.
1 Answer

Powder metallurgy is a process which deals with product of useful components from fine metal powders, from individual, mixed or alloyed with or without inclusion of non-metallic constituents

The powder metallurgy process generally consists of four basic steps:

(1) Metal powder preparation

(2) mixing & blending,

(3) compacting

(4) Presintering

(5) sintering

Advantages of powder metallurgy:

  1. Energy saving technique

  2. Rate of production is high

  3. Dimensional accuracy is excellent

  4. Surface finish is excellent

  5. Life of component part is longer

  6. Products are defect free with uniform structure

  7. Properties of parent components are retained

  8. Complex shape articles can be produced

  9. No loss of material

  10. Woods metal, Titman & tungsten carbide can de prepares by this method

Applications of powder metallurgy:

Important products manufactured by powder metallurgy are –

  • Porous bearing
  • Filaments of electric bulb of tungsten
  • Electric clock
  • Sewing machines
  • Gears
  • Cutting tools
  • Diamond impregnated cutting tools
  • Clutches
  • Brakes
  • Commutator brushes
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